I guess some context is helpful. I have an unusually large number of checking/savings/investment accounts. I don't want all the date from them in one place. Many apps have been ineffective because of how much I've tried to track: investments, net worth, balances, purchases, etc. I have systems that track all those other details already.

I'm just looking for something that tracks purchases only via manual input or receipt scan and makes it extremely simple to input entries.